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Servicing and repair of Leitch ADC 5112 studio wall mount clock


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I recently acquired a second-hand Leitch ADC 5112 studio wall mount clock for my study at home and it is losing time. We used these clocks when I was in the news room and I thought it would be nice to acquire such a piece for my study at home (see photo attached).


*** ADMIN NOTE *** no service requests on this forum please - you can contact the BWCMG if in U.K. for a list of their members  ***

20221014_160357.jpg

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    • Wow! OK, that's certainly something to aim for. Thank you for taking the time for posting all that. Very good of you. There have been a couple of posts, including yours obviously, that have taken information that I've seen before, but put it very clearly and concisely. It's been very useful.
    • For this test of the whole train, the barrel is installed with ratchet and click, all wheels are installed, but the pallet fork is not installed.  Apply a little wind to the mainspring and the whole train should spin until the wind runs out. Ideally then, the escape wheel should rebound back the other direction briefly. That is a sign that the mainspring can unwind all the way without any train friction binding it. If as it unwinds, you get no recoil and the escape wheel stops abruptly, there is friction in the train. Then, install each wheel one by one, alone, and test its spin with a puff of air. The escape wheel should spin like a top, uninhibited. And up the train, each larger wheel will spin a little less but they should all be set in motion by a puff of air. If one is binding, check its pivots and reclean them. If all of them spin freely independently but the train still doesn't spin freely together, then install the wheels in meshed pairs to check the wheel and pinion interaction - a puff of air should still be able to get two wheels spinning. One dirty or rusty pinion leaf can easily slow or stop the whole train.
    • Hi Joe and thanks for the welcome back ! Hopefully Mark can sort me out. Ive missed being in the asylum with all the other inmates. Thank you again Joe.
    • @RickTock Are your punches also soft steel? I'm curious to find if some production batches have corners cut, or some sellers unload the faulty QC-failures as I have seen with other tools. But I am no longer tempted to ever buy one of these sets.
    • Looks like it was glued and possibly just a flat acrylic.
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